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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 920 · 40 questions
TalentJR

How to solve it (Same number of places): Add zeros at the end so every decimal has the same number of places (0.5 = 0.500). Compare or add them like whole numbers, keeping the decimal points in a line. Place value after the point: tenths (0.1), hundredths (0.01), thousandths (0.001).

NameDateTime takenScore ___ / 40
  1. 1.Which is the greatest: 0.69, 0.062, 0.525, 0.6? (a) 0.69 (b) 0.062 (c) 0.525 (d) 0.6
  2. 2.Which is the smallest: 0.015, 0.8, 0.778, 0.81? (a) 0.015 (b) 0.8 (c) 0.778 (d) 0.81
  3. 3.6.09 + 3.7 = ? (a) 6.46 (b) 9.69 (c) 9.89 (d) 9.79
  4. 4.4.02 + 4.5 = ? (a) 8.62 (b) 8.42 (c) 8.52 (d) 4.47
  5. 5.7.91 + 5.1 = ? (a) 13.01 (b) 8.42 (c) 13.11 (d) 12.91
  6. 6.Which is the greatest: 0.51, 0.5, 0.444, 0.065? (a) 0.51 (b) 0.5 (c) 0.444 (d) 0.065
  7. 7.7.53 + 7.8 = ? (a) 15.33 (b) 8.31 (c) 15.43 (d) 15.23
  8. 8.Which is the greatest: 0.048, 0.555, 0.63, 0.6? (a) 0.048 (b) 0.555 (c) 0.63 (d) 0.6
  9. 9.What is the value of the digit 4 in 98.473? (a) 0.004 (b) 0.4 (c) 4 (d) 0.04
  10. 10.Which is the greatest: 0.046, 0.28, 0.151, 0.2? (a) 0.046 (b) 0.28 (c) 0.151 (d) 0.2
  11. 11.9.38 + 1.4 = ? (a) 10.68 (b) 9.52 (c) 10.88 (d) 10.78
  12. 12.What is the value of the digit 3 in 27.413? (a) 3 (b) 0.03 (c) 0.3 (d) 0.003
  13. 13.Which is the smallest: 0.018, 0.3, 0.215, 0.31? (a) 0.018 (b) 0.3 (c) 0.215 (d) 0.31
  14. 14.What is the value of the digit 2 in 85.921? (a) 0.02 (b) 0.2 (c) 2 (d) 0.002
  15. 15.Which is the greatest: 0.014, 0.228, 0.38, 0.3? (a) 0.014 (b) 0.228 (c) 0.38 (d) 0.3
  16. 16.8.97 + 3.3 = ? (a) 9.3 (b) 12.37 (c) 12.27 (d) 12.17
  17. 17.9.42 + 1.5 = ? (a) 10.92 (b) 9.57 (c) 10.82 (d) 11.02
  18. 18.Which is the greatest: 0.493, 0.52, 0.5, 0.043? (a) 0.493 (b) 0.52 (c) 0.5 (d) 0.043
  19. 19.Which is the greatest: 0.78, 0.7, 0.054, 0.626? (a) 0.78 (b) 0.7 (c) 0.054 (d) 0.626
  20. 20.3.41 + 3.5 = ? (a) 6.81 (b) 3.76 (c) 6.91 (d) 7.01
  21. 21.4.96 + 5.2 = ? (a) 5.48 (b) 10.26 (c) 10.16 (d) 10.06
  22. 22.Which is the smallest: 0.89, 0.8, 0.061, 0.776? (a) 0.89 (b) 0.8 (c) 0.061 (d) 0.776
  23. 23.What is the value of the digit 9 in 89.341? (a) 0.09 (b) 90 (c) 0.9 (d) 9
  24. 24.What is the value of the digit 1 in 24.517? (a) 0.01 (b) 1 (c) 0.001 (d) 0.1
  25. 25.2.19 + 6.2 = ? (a) 2.81 (b) 8.49 (c) 8.29 (d) 8.39
  26. 26.2.02 + 5.8 = ? (a) 7.82 (b) 7.72 (c) 7.92 (d) 2.6
  27. 27.Which is the greatest: 0.5, 0.56, 0.429, 0.063? (a) 0.5 (b) 0.56 (c) 0.429 (d) 0.063
  28. 28.2.51 + 9.8 = ? (a) 12.21 (b) 12.31 (c) 12.41 (d) 3.49
  29. 29.What is the value of the digit 2 in 39.254? (a) 0.02 (b) 0.2 (c) 0.002 (d) 2
  30. 30.What is the value of the digit 8 in 43.892? (a) 0.08 (b) 0.008 (c) 8 (d) 0.8
  31. 31.Which is the smallest: 0.317, 0.47, 0.4, 0.043? (a) 0.317 (b) 0.47 (c) 0.4 (d) 0.043
  32. 32.Which is the greatest: 0.691, 0.76, 0.7, 0.018? (a) 0.691 (b) 0.76 (c) 0.7 (d) 0.018
  33. 33.5.44 + 4.4 = ? (a) 9.84 (b) 5.88 (c) 9.74 (d) 9.94
  34. 34.1.57 + 5.5 = ? (a) 2.12 (b) 6.97 (c) 7.07 (d) 7.17
  35. 35.9.78 + 2.2 = ? (a) 11.98 (b) 11.88 (c) 12.08 (d) 10
  36. 36.4.14 + 8.2 = ? (a) 4.96 (b) 12.24 (c) 12.34 (d) 12.44
  37. 37.7.35 + 2.1 = ? (a) 7.56 (b) 9.35 (c) 9.45 (d) 9.55
  38. 38.What is the value of the digit 3 in 24.913? (a) 0.03 (b) 3 (c) 0.003 (d) 0.3
  39. 39.1.95 + 7.6 = ? (a) 2.71 (b) 9.55 (c) 9.45 (d) 9.65
  40. 40.What is the value of the digit 3 in 32.675? (a) 3 (b) 30 (c) 0.03 (d) 0.3

Answer key

  1. 0.69
  2. 0.015
  3. 9.79
  4. 8.52
  5. 13.01
  6. 0.51
  7. 15.33
  8. 0.63
  9. 0.4
  10. 0.28
  11. 10.78
  12. 0.003
  13. 0.018
  14. 0.02
  15. 0.38
  16. 12.27
  17. 10.92
  18. 0.52
  19. 0.78
  20. 6.91
  21. 10.16
  22. 0.061
  23. 9
  24. 0.01
  25. 8.39
  26. 7.82
  27. 0.56
  28. 12.31
  29. 0.2
  30. 0.8
  31. 0.043
  32. 0.76
  33. 9.84
  34. 7.07
  35. 11.98
  36. 12.34
  37. 9.45
  38. 0.003
  39. 9.55
  40. 30

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